diff --git a/pkg/commands/compute/testdata/init/fastly-viceroy-update.toml b/pkg/commands/compute/testdata/init/fastly-viceroy-update.toml
index 616395b47..9cb3214cf 100644
--- a/pkg/commands/compute/testdata/init/fastly-viceroy-update.toml
+++ b/pkg/commands/compute/testdata/init/fastly-viceroy-update.toml
@@ -34,3 +34,14 @@ name = "Default Rust template"
       foo = "bar"
       baz = """
 qux"""
+
+  [local_server.object_store]
+    store_one = [{key = "first", data = "This is some data"}, {key = "second", path = "strings.json"}]
+
+    [[local_server.object_store.store_two]]
+      key = "first"
+      data = "This is some data"
+
+    [[local_server.object_store.store_two]]
+      key = "second"
+      path = "strings.json"
diff --git a/pkg/manifest/manifest.go b/pkg/manifest/manifest.go
index a504ba812..b9ff6ce3c 100644
--- a/pkg/manifest/manifest.go
+++ b/pkg/manifest/manifest.go
@@ -249,9 +249,9 @@ type SetupLogger struct {
 
 // LocalServer represents a list of mocked Viceroy resources.
 type LocalServer struct {
-	Backends     map[string]LocalBackend     `toml:"backends"`
-	Dictionaries map[string]LocalDictionary  `toml:"dictionaries,omitempty"`
-	ObjectStore  map[string]LocalObjectStore `toml:"object_stores,omitempty"`
+	Backends     map[string]LocalBackend       `toml:"backends"`
+	Dictionaries map[string]LocalDictionary    `toml:"dictionaries,omitempty"`
+	ObjectStore  map[string][]LocalObjectStore `toml:"object_store,omitempty"`
 }
 
 // LocalBackend represents a backend to be mocked by the local testing server.
@@ -272,8 +272,8 @@ type LocalDictionary struct {
 // LocalObjectStore represents an object_store to be mocked by the local testing server.
 type LocalObjectStore struct {
 	Key  string `toml:"key"`
-	Path string `toml:"path"`
-	Data string `toml:"data"`
+	Path string `toml:"path,omitempty"`
+	Data string `toml:"data,omitempty"`
 }
 
 // Exists yields whether the manifest exists.
@@ -307,6 +307,12 @@ func (f *File) SetOutput(output io.Writer) {
 	f.output = output
 }
 
+func (f *File) logErr(err error) {
+	if f.errLog != nil {
+		f.errLog.Add(err)
+	}
+}
+
 // AutoMigrateVersion updates the manifest_version value to
 // ManifestLatestVersion if the current version is less than the latest
 // supported and only if there is no [setup] configuration defined.
@@ -427,7 +433,7 @@ func (f *File) Read(path string) (err error) {
 	/* #nosec */
 	data, err := os.ReadFile(path)
 	if err != nil {
-		f.errLog.Add(err)
+		f.logErr(err)
 		return err
 	}
 
@@ -442,14 +448,14 @@ func (f *File) Read(path string) (err error) {
 	// structure otherwise we'll see errors from the toml library.
 	manifestSection, err := containsManifestSection(data)
 	if err != nil {
-		f.errLog.Add(err)
+		f.logErr(err)
 		return fmt.Errorf("failed to parse the fastly.toml manifest: %w", err)
 	}
 
 	if manifestSection {
 		buf, err := stripManifestSection(bytes.NewReader(data), path)
 		if err != nil {
-			f.errLog.Add(err)
+			f.logErr(err)
 			return fsterr.ErrInvalidManifestVersion
 		}
 		data = buf.Bytes()
@@ -460,13 +466,13 @@ func (f *File) Read(path string) (err error) {
 	// version supported by the Fastly CLI.
 	data, err = f.AutoMigrateVersion(data, path)
 	if err != nil {
-		f.errLog.Add(err)
+		f.logErr(err)
 		return err
 	}
 
 	err = toml.Unmarshal(data, f)
 	if err != nil {
-		f.errLog.Add(err)
+		f.logErr(err)
 		return fsterr.ErrParsingManifest
 	}
 
@@ -481,7 +487,7 @@ func (f *File) Read(path string) (err error) {
 		}
 		err = f.Write(path)
 		if err != nil {
-			f.errLog.Add(err)
+			f.logErr(err)
 			return fmt.Errorf("unable to save fastly.toml manifest change: %w", err)
 		}
 	}
diff --git a/pkg/manifest/manifest_test.go b/pkg/manifest/manifest_test.go
index 65c1cde88..3a355cc63 100644
--- a/pkg/manifest/manifest_test.go
+++ b/pkg/manifest/manifest_test.go
@@ -12,6 +12,7 @@ import (
 	fsterr "github.com/fastly/cli/pkg/errors"
 	"github.com/fastly/cli/pkg/manifest"
 	"github.com/fastly/cli/pkg/testutil"
+	"github.com/google/go-cmp/cmp"
 	toml "github.com/pelletier/go-toml"
 )
 
@@ -295,7 +296,8 @@ func TestManifestPersistsLocalServerSection(t *testing.T) {
 		t.Fatal("expected [local_server] block to exist in fastly.toml but is missing")
 	}
 
-	if lt.(*toml.Tree).String() != ot.(*toml.Tree).String() {
-		t.Fatal("testing section between original and updated fastly.toml do not match")
+	got, want := lt.(*toml.Tree).String(), ot.(*toml.Tree).String()
+	if diff := cmp.Diff(want, got); diff != "" {
+		t.Fatalf("testing section between original and updated fastly.toml do not match (-want +got):\n%s", diff)
 	}
 }
diff --git a/pkg/manifest/testdata/fastly-viceroy-update.toml b/pkg/manifest/testdata/fastly-viceroy-update.toml
index 616395b47..9cb3214cf 100644
--- a/pkg/manifest/testdata/fastly-viceroy-update.toml
+++ b/pkg/manifest/testdata/fastly-viceroy-update.toml
@@ -34,3 +34,14 @@ name = "Default Rust template"
       foo = "bar"
       baz = """
 qux"""
+
+  [local_server.object_store]
+    store_one = [{key = "first", data = "This is some data"}, {key = "second", path = "strings.json"}]
+
+    [[local_server.object_store.store_two]]
+      key = "first"
+      data = "This is some data"
+
+    [[local_server.object_store.store_two]]
+      key = "second"
+      path = "strings.json"